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Heavy oil hydrotreating method to improve catalyst utilization

A technology of heavy oil hydrogenation and treatment method, which is applied in the direction of hydrotreating process, treatment of hydrocarbon oil, petroleum industry, etc., can solve the problems of small increase in the operation period of the device and so on.

Active Publication Date: 2020-10-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method does not greatly increase the operating cycle of the device.

Method used

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  • Heavy oil hydrotreating method to improve catalyst utilization
  • Heavy oil hydrotreating method to improve catalyst utilization
  • Heavy oil hydrotreating method to improve catalyst utilization

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] according to figure 1 In the process flow, the hydrogenation pretreatment reaction zone includes a switchable first hydrogenation pretreatment reaction zone and a second hydrogenation pretreatment reaction zone, the first hydrogenation pretreatment reaction zone is provided with a reactor 1, and the second hydrogenation pretreatment reaction zone is provided with a reactor 1. A reactor 2 is arranged in the second hydrogenation pretreatment reaction zone, and the hydrogenation treatment reaction zone includes a hydrogen mixing tank 6 , a reactor 3 , a hydrogen mixing tank 7 and a reactor 4 arranged in series. According to the material flow direction, the reactor in the hydrogenation pretreatment reaction zone (only one hydrogenation pretreatment reaction zone is online during operation) is filled with catalyst A, catalyst B and catalyst C, and the loading volume ratio of each catalyst is 2:7 : 1. Catalyst B and Catalyst C are installed in the reactor 3 of the hydrotreat...

Embodiment 2

[0069] according to figure 2 In the described process flow, only one hydrogenation pretreatment reaction zone is set, and a reactor 1 is set in this hydrogenation pretreatment reaction zone, and the hydrogenation treatment reaction zone includes reactor 3 and reactor 4 arranged in series, and adding The catalyst loading in the hydrogen pretreatment reaction zone accounts for 36% of the total catalyst loading in the unit. According to the material flow direction, catalyst A, catalyst B and catalyst C are filled in the reactor 1 of the hydrogenation pretreatment reaction zone, and the loading volume ratio of the three catalysts is 2:6:2. Catalyst B and catalyst C are housed in hydrotreating reaction zone reactor 3, and the loading volume ratio of two kinds of catalysts is 3: 7, and catalyst C and catalyst D are filled in reactor 4, and the loading volume ratio of two kinds of catalysts is 3: 7. The conditions and test results of reactor hydrotreating are listed in Table 2.

...

Embodiment 3

[0075] according to figure 1 In the process flow, the hydrogenation pretreatment reaction zone includes a switchable first hydrogenation pretreatment reaction zone and a second hydrogenation pretreatment reaction zone, the first hydrogenation pretreatment reaction zone is provided with a reactor 1, and the second hydrogenation pretreatment reaction zone is provided with a reactor 1. A reactor 2 is arranged in the second hydrogenation pretreatment reaction zone, and the hydrogenation treatment reaction zone includes a reactor 3 and a reactor 4 arranged in series. According to the material flow direction, the reactor in the hydrogenation pretreatment reaction zone (only one hydrogenation pretreatment reaction zone is online during operation) is filled with catalyst A, catalyst B and catalyst C, and the loading volume ratio of each catalyst is 3:6 : 1. Catalyst B and catalyst C are housed in hydrotreating reaction zone reactor 3, and the loading volume ratio of two kinds of cata...

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Abstract

The invention discloses a heavy oil hydrotreatment method for improving the utilization rate of a catalyst. Heavy oil raw oil is mixed with hydrogen, and the obtained mixture goes through a hydrogenation pretreatment zone and undergoes a hydrodemetallization and partial desulfurization reaction; and the obtained reaction effluent enters a hydrotreatment reaction zone, and undergoes a hydrodesulfurization and hydrodenitrogenation reaction, wherein the reaction temperature of the hydrogenation pretreatment reaction zone is higher than the reaction temperature of the hydrotreatment reaction zone.The reaction temperature of the hydrogenation pretreatment reaction zone is high in the method, so most of metal impurities is the material can be removed, and the inactivation reason of a desulphurization catalyst and / or denitrification catalyst in the hydrotreatment reaction zone becomes only coke formation inactivation from previous metal deposition and coke formation inactivation, thereby thedesulphurization catalyst and the denitrification catalyst can be regenerated after being used for a cycle, the running cycle of a hydrogenation device is prolonged, the running efficiency of the device is increased, and the economical efficiency is improved.

Description

technical field [0001] The invention relates to the field of petroleum refining, in particular to a heavy oil hydrotreating method for improving catalyst utilization. Background technique [0002] At present, the demand for light and medium oil products in the domestic and foreign oil product markets will continue to rise, while the demand for heavy oil products such as fuel oil will show a downward trend. In addition, due to the increasing pressure of environmental protection, countries have generally raised the quality standard requirements of petroleum products, especially gasoline and diesel products for vehicles. Under the above-mentioned market trend, the refining technology that can not only realize the lightening of heavy oil at a more economical and reasonable price, but also make the obtained products meet the increasingly stringent specifications of gasoline and diesel products has become a key technology developed by domestic and foreign refining technology devel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/04
CPCC10G65/04C10G2300/107C10G2300/1077C10G2300/202C10G2300/205C10G2300/206
Inventor 吴锐刘涛韩照明王军袁俊曹晓羿朱文权杨大为徐加龙
Owner CHINA PETROLEUM & CHEM CORP